P1438-4

View detailed technical data, stock status, and sourcing information for: P1438-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-538-2551

Item Name Code

03263

Assigment Date

01/01/1963 (63 years ago)

An insulator having flat surfaces, with or without holes, whose thickness does not exceed 25 percent of its length or width, whichever is smaller, and whose shape is other than round. Excludes:insulator (1), spacer; insulator (1), washer; mounting pad, electrical-electronic component; plate, electrical shield; and terminal board.

1 setscrew hole quantity, straight shank style, 0.437 inches nominal shank diameter, 0.250 inches nominal shank length, 0.125 inches nominal distance from hole center to knob/skirt base

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Shank Length: 0.250 inches nominal
Shank Diameter: 0.437 inches nominal
Shank Style: straight
Setscrew Hole Quantity: 1
Distance From Hole Center To Knob/Skirt Base: 0.125 inches nominal
Gripping Surface Condition: grip aid
Outside Diameter: 0.875 inches nominal
Attachment Method: screw on
Overall Thickness: 0.500 inches nominal
Thread Quantity Per Inch: 64 screw hole
Nominal Thread Size: 0.086 inches screw hole
Material: copper alloy
Style Designator: round
Thread Series Designator: unf screw hole

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
032737	Knob
113P032737	Knob
549633PC4	Knob
P1438-4	Knob
P1438PC4	Knob

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5355-00-538-2551?

The FSCG of the NSN 5355-00-538-2551 is 5355

Does the NSN 5355-00-538-2551 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-538-2551 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5355-00-538-2551 contain precious materials?

Precious metal content is unknown

Does NSN 5355-00-538-2551 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5355-00-538-2551 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963